40695569 has 4 divisors (see below), whose sum is σ = 43089444. Its totient is φ = 38301696.

The previous prime is 40695559. The next prime is 40695583. The reversal of 40695569 is 96559604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16321600 + 24373969 = 4040^2 + 4937^2 .

It is a cyclic number.

It is not a de Polignac number, because 40695569 - 2⁸ = 40695313 is a prime.

It is a super-2 number, since 2×40695569² = 3312258672467522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40695539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1196912 + ... + 1196945.

It is an arithmetic number, because the mean of its divisors is an integer number (10772361).

Almost surely, 2^40695569 is an apocalyptic number.

It is an amenable number.

40695569 is a deficient number, since it is larger than the sum of its proper divisors (2393875).

40695569 is a wasteful number, since it uses less digits than its factorization.

40695569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2393874.

The product of its (nonzero) digits is 291600, while the sum is 44.

The square root of 40695569 is about 6379.3078778187. The cubic root of 40695569 is about 343.9661523620.

The spelling of 40695569 in words is "forty million, six hundred ninety-five thousand, five hundred sixty-nine".